Add InPost Pay integration to admin templates

- Created a new template for the cart rule form with custom label, switch, and choice widgets.
- Implemented the InPost Pay block in the order details template for displaying delivery method, APM, and VAT invoice request.
- Added legacy support for the order details template to maintain compatibility with older PrestaShop versions.

modules/inpostizi/upgrade/FileRemoverTrait.php

@@ -0,0 +1,54 @@
+<?php
+
+declare(strict_types=1);
+
+namespace InPost\Izi\Upgrade;
+
+use Symfony\Component\Filesystem\Filesystem;
+
+/**
+ * @internal
+ */
+trait FileRemoverTrait
+{
+    private static $namespacePrefix = 'izi\\prestashop\\';
+
+    /**
+     * @var \Module
+     */
+    private $module;
+
+    /**
+     * @var Filesystem
+     */
+    private $filesystem;
+
+    private function removeFiles(array $paths): bool
+    {
+        $basePath = rtrim($this->module->getLocalPath(), '/');
+
+        $files = array_map(static function (string $path) use ($basePath): string {
+            return sprintf('%s/%s', $basePath, $path);
+        }, $paths);
+
+        $this->getFileSystem()->remove($files);
+
+        return true;
+    }
+
+    private function removeClasses(array $classes): bool
+    {
+        $paths = array_map(static function (string $class): string {
+            $class = str_replace(self::$namespacePrefix, '', $class);
+
+            return 'src/' . str_replace('\\', DIRECTORY_SEPARATOR, $class) . '.php';
+        }, $classes);
+
+        return $this->removeFiles($paths);
+    }
+
+    private function getFileSystem(): Filesystem
+    {
+        return $this->filesystem ?? $this->filesystem = new Filesystem();
+    }
+}